Three-dimensional knee kinematic analysis during treadmill gait: Slow imposed speed versus normal self-selected speed.
Three-dimensional knee kinematic analysis during treadmill gait: Slow imposed speed versus normal self-selected speed.
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DOI：
10.1302/2046-3758.68.bjr-2016-0296.r1
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发表时间：
2017-08
影响因子：
4.6
通讯作者：
Choong PF
中科院分区：
文献类型：
--
作者：
Mannering N;Young T;Spelman T;Choong PF
虽然步态速度在健康和受伤的成年人之间是可变的，但速度单独改变3D体内膝关节运动学的程度尚未完全描述。这项前瞻性研究的目的是更好地了解时空和三维膝关节运动学的变化引起的缓慢相比，正常的自我选择的步行速度在年轻的健康成年人。共有26名男性和25名女性（18至35岁）参与了本研究。参与者在带有KneeKG系统的跑步机上以缓慢的强制速度（2 km/hr）行走三次试验，然后以自选的舒适行走速度进行另外三次试验。使用Stata/IC 14进行配对t检验、Wilcoxon符号秩检验、Mann-Whitney U检验和斯皮尔曼秩相关系数，以比较慢速与自选步行速度的运动学。与正常步态相比，慢步态的步频和步长均减少。慢速行走减少了站立时的屈曲（10.6°与13.7°; p < 0.0001）和屈曲运动范围（ROM）（53.1°与57.3°; p < 0.0001）。慢速行走也导致内收ROM（8.3°与10.0°; p < 0.0001）、旋转ROM（11.4°与13.6°; p < 0.0001）和前后平移ROM（8.5 mm与10.1 mm; p < 0.0001）减少。减少时空措施，减少屈曲在立场，并在所有平面的膝关节ROM诱导缓慢行走表明膝关节步态僵硬，类似于以前在骨关节炎中证明。需要进一步的研究来确定这些特征在健康膝关节中通过缓慢行走诱导是否提供了骨关节炎步态的有效模型。引用此文章：N。Mannering，T.扬，T. Spelman，P. F.阿忠跑步机步态中的三维膝关节运动学分析：缓慢施加速度与正常自选速度。骨关节研究2017;6：514-521。DOI：10.1302/2046-3758.68.BJR-2016-0296.R1。
Whilst gait speed is variable between healthy and injured adults, the extent to which speed alone alters the 3D in vivo knee kinematics has not been fully described. The purpose of this prospective study was to understand better the spatiotemporal and 3D knee kinematic changes induced by slow compared with normal self-selected walking speeds within young healthy adults. A total of 26 men and 25 women (18 to 35 years old) participated in this study. Participants walked on a treadmill with the KneeKG system at a slow imposed speed (2 km/hr) for three trials, then at a self-selected comfortable walking speed for another three trials. Paired t-tests, Wilcoxon signed-rank tests, Mann-Whitney U tests and Spearman’s rank correlation coefficients were conducted using Stata/IC 14 to compare kinematics of slow versus self-selected walking speed. Both cadence and step length were reduced during slow gait compared with normal gait. Slow walking reduced flexion during standing (10.6° compared with 13.7°; p < 0.0001), and flexion range of movement (ROM) (53.1° compared with 57.3°; p < 0.0001). Slow walking also induced less adduction ROM (8.3° compared with 10.0°; p < 0.0001), rotation ROM (11.4° compared with 13.6°; p < 0.0001), and anteroposterior translation ROM (8.5 mm compared with 10.1 mm; p < 0.0001). The reduced spatiotemporal measures, reduced flexion during stance, and knee ROM in all planes induced by slow walking demonstrate a stiff knee gait, similar to that previously demonstrated in osteoarthritis. Further research is required to determine if these characteristics induced in healthy knees by slow walking provide a valid model of osteoarthritic gait. Cite this article: N. Mannering, T. Young, T. Spelman, P. F. Choong. Three-dimensional knee kinematic analysis during treadmill gait: Slow imposed speed versus normal self-selected speed. Bone Joint Res 2017;6:514–521. DOI: 10.1302/2046-3758.68.BJR-2016-0296.R1.